Brake-rigging for radial trucks.



F. E. SCHWENTLER.

BRAKE meme FOR RADIAL TRUCKS.

APPLICATION FILED S EPT.16| I914- Patented May 4, 1915.

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"'iiNiTED s'r TEs PATENT OFFICE.

FRANCIS E. SCHWENTLER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO AMERICANBRAKE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MILSSOURI.

BRAKE-RIGGING FOR RADIAL TRUCKS.

Specification of Letters Patent.

Patented May 4, 1915.

Application filed September 16, 1914. Serial No. 861,970.

Lnma'citizen of the United States,and a resident of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inBrake-Rigging for Radial Trucks, of which improxement' the following isa specification.

This invention relates to brake rigging for locomotives having radialtrailer trucks, and has for its object to more fully equalize thebraking stresses as applied to the radial trailer truck by employing aclasp type of brake therefor, and at the same time to so locate therespective pull rod and lever connections as to give the properclearances for the ash pan and other parts of the 1000 motive in theradial movements of the truck. In the accompanying drawings: Figure l isa side view of a brake design embodying my improvement, as applied totwo rear pairs of drivers and radial trailer truck of a locomotive; andFig. 2, a plan of the same,

portions of the locomotiveframe beingindi cated in dotted lines.

According to the construction shown 1n the drawing, my improvement isapplied to the usual form of locomotive having aradial trailer truck,the journal boxes of which are carried on the frame, 4, pivoted at 5, tothe main frame. v are shown having the customary brake beams, 6 and 7connected to the respective hangers, 14 and 15, and carrying the brakeheads and shoes, S and S For operating the driver brakes the usual formof brake rigging may be employed,

comprisingthe two sets of rods, 13, 12 and 3, and equalizing levers, 8and 9, one set on each side of the locomotive, and if more than twopairs of driving wheels are employed, the rods, 13, will'be connected tothe corresponding equalizers for said additional wheels, as will bereadily understood.

For actuating the brakes on the radial,

trailer truck, the rod, 11, connected to the inner ends of the twoequalizer levers, ,9, is located at substantially the center line of thelocomotive, and is provided with a cross equalizer, 10, pivoted theretoat a pointin close proximity to the pivot, 5, of the radial truck frame.The wheels of the trailer truck are provided with brake heads andshoes,---

S and S upon both sides thereof pivotally supported on the respectivejaw. hanger Two pairs of driving wheels levers, 19 and 20, mounted onsuitable brackets carried by the trailer frame, the lower ends of saidhangers being pivotally connected to the respective short levers, 17 and21, which are connected together by pull rods, 18, and actuated by rods,16, connected to the outer ends of the cross equalizer, 10.

The inner ends of the levers, 21, are pivoted on fixed fulcruins mountedon the frame, 4. By means of this construction, brake'shoes are appliedat both sides of the trailer truck wheels, without the use of brakebeams, the truck levers, 17, and 21, being of suitable dimensions togive the desired braking pressures, and as the'pullrods, 16, are spacedsubstantially the full width of the frame there is no interference ofthe brake rigging with the ash pan or other parts of the locomotive. Theconnecting rod, 11, is suitably guided at the center line of thelocomotive to resist lateral movement when the brake is applied inpassing around curves, and as the center of the cross equalizer, 10, isclose to the trailer truck center pin, 5, the brake piston travel willbe subjected to the least possible variation due to the swinging of theradial truck. I

Having now described my invention, what I claim as new and'desire tosecure by Letters Patent is:

1.111- a brake rigging for locomotives with trailer trucks, thecombination ofzbrak beams, hangers and shoes for the driving\ wheels,brake shoes applied to both sides of the trailer truck wheels, and twosets of equalizer levers and pull rods, one on each side, for actuatingsaid brake beams and the brake shoes of the trailer truck.

2. In-a brake rigging for locomotives with trailer trucks, thecombination of brake beams, hangers and shoes for the driving wheels,equalizer levers and rods connected to said brake beams, a centralconnecting rod, a cross equalizer pivoted thereto, brake shoes appliedto both sides of the trailer truck wheels, and rods connected at the outside ends of said cross equalizer for operating said brake shoes for thetrailer truck.

3. In a brake rigging for locomotives with trailer trucks, thecombination of brake beams, hangers and shoes for the driving truckWheels, hanger levers therefor, truck levers pivotally connected to saidhangers, pull rods connecting said truck levers together, and rodsconnecting said truck levers with the cross equalizer.

4. In a brake rigging for locomotives with trailer trucks, thecombination of brake beams, hangers and shoes for the driving Wheelsequalizer levers and rods connected 10 to said brake beams, a centrallylocated connecting rod having guides, a cross equalizer pivoted theretoat a point near the radial truck pivot, brake shoes applied to bothsides of the radial truck ,Wheels,and rods connected to saidcrossequalizer for operat- 15 ing the brake shoes of said truck. FRANCISE. SOHWENTLEB. Witnesses C. C. ZIEGLER', I F. G. WILLIAMSON.

